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Description
Pacemaker Tri-Y Performance Headers for Holden VT Series 1 5.0L V8 1997–1999 - PP5050-03Pacemaker Performance Tri Y Headers for Holden VT Series 1 (5. 0L V8) PP5050 03 Unlock major low to mid range torque gains and give your iron block small block a deep muscle rumble with the Pacemaker Sport Systems premium Tri Y performance headers. Specifically engineered to extract maximum efficiency from the classic Holden 5. 0L (304ci) V8 engine, this high flow collector setup is precision molded to fit perfectly within the engine bay clearance
Pacemaker Performance Tri-Y Headers for Holden VT Series 1 (5.0L V8) - PP5050-03
Unlock major low-to-mid range torque gains and give your iron-block small block a deep muscle rumble with the Pacemaker Sport Systems premium Tri-Y performance headers. Specifically engineered to extract maximum efficiency from the classic Holden 5.0L (304ci) V8 engine, this high-flow collector setup is precision-molded to fit perfectly within the engine bay clearance paths, steering rack lines, and independent front chassis layouts of early VT Commodore configurations. By splitting the exhaust pulses into paired secondary pipes (Tri-Y layout), these headers optimize exhaust gas velocity and scavenging performance to completely remove power-robbing backpressure right out of the cylinder head. As Australia’s premium exhaust innovator, Pacemaker manufactures these headers from heavy-duty steel to deliver exceptional durability and temperature control under high thermal stress, providing an aggressive performance bark on throttle and making it a massive upgrade over restrictive factory cast manifolds. Note: Fits Holden VT Series 1 models (1997–1999) equipped with the 5.0L Holden V8 engine configuration; does not fit Series 2 Gen III LS1 builds.
Features:
Precision-manufactured in Australia to deliver premium cylinder scavenging, high-stress durability under intense heat, and a classic muscle car exhaust note.
- Tri-Y Design Architecture: Advanced multi-secondary pipe layout engineered explicitly to boost low-to-mid range torque retention and accelerate overall exhaust gas clearance.
- Heavy-Duty Base Flanges: Precision-machined, thick mounting plates ensure a perfect face seal against the cylinder head to completely prevent exhaust gas leaks.
- Mandrel Bent Tubing: Rigid plumbing structure guarantees a smooth, uniform internal pipe diameter through all primary bends to optimize gas velocity.
- Engine Bay Clearance: Custom engineered to clear the steering rack, starter motor, and crossmember paths of the VT engine bay configuration without modification.
- Australian Made Quality: Proudly designed and manufactured in Australia to withstand high thermal loads and extreme driving demands.
| Product Specifications for PP5050-03 | |||
|---|---|---|---|
| Brand | Pacemaker Sport Systems | Part # / SKU | PP5050-03 |
| Product Type | Performance Exhaust Headers / Extractors | Header Configuration | 8-Cylinder Tri-Y (Try-Y) Layout |
| Engine Compatibility | 5.0L V8 Holden Iron-Block (304ci) | Piping Structure | Mandrel-Bent Performance Tubing |
Important Fitment Notes:
- Specifically engineered to fit Holden VT Series 1 platforms powered by the original Australian 5.0L V8 iron-block engine configuration (1997–1999).
- Series Specific Engine Fitment: This product only fits the early Series 1 production run featuring the traditional Holden V8. It will not fit VT Series 2 or subsequent platforms equipped with the 5.7L Chevrolet Gen III LS1 aluminum V8 block.
- Product scope: Set includes performance Tri-Y driver and passenger side extractors only (intermediate piping and catalytic converters are sold separately).
- Designed to drop directly into standard engine bay alignments, re-using factory engine bay clearance tolerances.
- Professional automotive performance technician installation is highly recommended to guarantee ideal steering clearance and a strict, leak-free cylinder head seal.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| Holden | Commodore / Calais | 1997 | 1999 | Sedan, Wagon & Ute Layouts | VT Series 1 Only | 5.0L V8 (Holden 304) | Executive / SS / Berlina V8 | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Sports Exhaust Headers | Five (5) years. |
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Exchange/Return Notes
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4.8 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Still the champ.
Color: Black/Negative Digital/Gray, Color: Black/Negative Digital/Gray
I absolutely LOVE my Casio GBA800 that I have bully bars on, so she's quite huge. Analog with Bluetooth, pretty cool. If I ever remember to use such things. I have a phone and laptop on me usually, why do I need to play with my watch? I want to tell time, that's it.
Comes along a good sale for an Ironman, and I used to be a complete fanatic for only Ironman for a real person's needs. Why not, I've been fighting the Casio all day with my coat cuff, let's get something a bit slimmer for when it's coat season. See if they're still great. Yup! Sure is.
It's been probably 25 years ago last time I wore this style of Timex, and can you believe the button setup and beeps are all still the same as way back when! And somehow, my subconscious remembers the button presses. Wild.
This thing is light as a feather, and I got the inverse LCD for fun, which is cool as all get out, but takes some getting used to. The Indiglo sure looks awesome, though, and she's like Knight Rider down there. Stealth. The display is big, and easy even for my old eyes, the band is supremely comfortable, and there's a strap catch that actually works correctly! With no Bluetooth, battery life should be outstanding - always used to be. Back when watch batteries were like $12 each. There goes my allowance! Lol.
I'm very impressed by this timepiece. I really didn't mean to order order it, but, oh well. I love it as much as my Casio. Affordable tough watches rock!
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Reviewed in the United States on January 21, 2025
★★★★★ 5
The colour is cool
Color: Black/Digital Black/Black
Cool stuff
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Reviewed in the United States on May 20, 2026
★★★★★ 5
This Timex Ironman lives up to its name
Color: Black/Digital Gray/Black
Timex Ironman watches have been with me for a decade. This particular one I just ordered as a backup for the same one that I have had for seven years (and still works perfectly). I don't know why I ordered a backup except that I love it so much that I couldn't fathom the idea that Timex might discontinue this model. Why do I love it so much? Because it is functional in many ways. Aside from its durability, reliability and the fact that it fits on my wrist so comfortably, it is easy to read and extremely useful for tasks that need countdown alarms as well as regular timers (it has three which you can set). Since I gave up "fashionable" watches years ago in favor of practical, easy to read, multifunctional devises I found this Timex the best of all the other brands that I have tried in this category. Years ago, President Bill Clinton, who jogged regularly, was heavily chastised for wearing a very functional Timex Ironman watch in the Oval Office instead of what the professional politicians considered appropriate for a President. It was then that I realized how important it was for a person to wear a watch that they loved, and that was functional for them. At that point in time I had many other watches that I didn't jettison until later when I realized that I need only wear the watch that I loved and was useful to me. I still have another watch that I saved for "appropriate" times out but have only worn it once. The rest of the time my Timex Ironman stays on my wrist wherever I go.
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Reviewed in the United States on September 13, 2025
★★★★★ 5
A very comfy, pleasant casual sports watch- especially good for training
Color: Black/Digital Gray/Silver-Tone, Color: Black/Digital Gray/Silver-Tone
The Ironman series of watches has been around for about 40 years now, and with good reason. The current iteration doesn't disappoint. It's light weight, easy-to-read, has a good backlight, offers simple operation, great buttons, a decently loud chime, and is a feature rich watch. I purchased this one on a lark; it was sold as "used- very good" from an Amazon warehouse for $20. The Timex packaging/ box was damaged, but the watch itself was new, wrapped and seemed unused. Since I do not wear an item's packaging, I always look for such items when shopping on Amazon, as it can save quite a bit. In this case it was $12 less expensive, or about 1/3 less costly.
I have owned a digital watch for over 40 years; from left to right in the photo- my 1980 Seiko (owned since new), my daily Casio, which has solar and atomic clock radio signal time setting, and the Ironman for you to compare size. Owning a number of Casio digital watches, I was pleasantly surprised by the comfort and ease of use of this Timex Ironman. The Ironman does feel somewhat more "plasticky" that some Casio watches I have, which may influence some buyers. But once you get past that feel, if you like the look of the watch, it's a great offering, especially at a $20 price point. The on the Ironman, a chronograph, a countdown timer, a second time zone, three alarms, 30 lap records, occasion reminders , and a perpetual calendar make it comparable, or better than many of the similarly priced Casio offerings. The Ironman does not feel quite as substantial as some of the lower cost G-Shock offerings I have tried, but is at least as comfy on my 7 1/2 inch wrist. Water resistance seems fine at 100 meters, and the recessed plastic crystal should avoid most scratches. The features should be very useful for those who do not want to wear a smartwatch for training. I hope this review has been helpful.
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Reviewed in the United States on May 6, 2023
★★★★★ 5
So far so good
Color: Brown
I have had issues with other models/variations of the timex expedition in the past, so I was hesitant to get an even more expensive version of it, but I just really liked this watch so I gave it a shot. I was looking for a new “daily driver” watch as I have a bunch of nicer, more expensive watches that I didn’t want to wear to work at a hospital. I like the solar charging feature for sure as I change my own watch batteries and it can be a pain sometimes. It’s a nice weighty watch, which I like because it feels solid, not cheap. So far it seems to be keeping time well, which is an issue I’ve had with other expeditions in the past. I really like the look of this watch a lot. It’s a sharp looking watch without being too flashy or fancy so it can be worn with just about any attire. I will note that because of the solar feature, it needs to be charged well before setting the time. I placed it under a led light for about 24 hours before setting the time and using it and when I don’t wear it I place it near a window. So far I’m really liking it, but I haven’t had it long enough to really know about long-term reliability. I will update if any issues arise.
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Reviewed in the United States on September 14, 2025